Retrieving App Service list from Azure using C# Microsoft.Azure.Management.Fluent is resulting in 'this.Client.SubscriptionId' cannot be null

Question

I'm attempting to use the Fluent libraries in a C# web application in order to retrieve a list of application services from Azure.

My problem is that function calls to do so are throwing an exception "'this.Client.SubscriptionId' cannot be null. " .

The way I'm authenticating is using the FromServicePrinciple call:

AzureCredentials credentials = SdkContext.AzureCredentialsFactory.FromServicePrincipal(ApplicationID, AuthKey, TenantID, AzureEnvironment.AzureGlobalCloud);

Then creating an interface;

IAzure az = Azure.Configure().Authenticate(credentials).WithDefaultSubscription();

As far as I can tell, the applicationid and tenantid are correct, because otherwise I get a different exception that says the application cannot be found. I also cant see how I could have gotten the authkey wrong since I just created it.

When I examine az.SubscriptionId at this point it is null, which I'm guessing it shouldn't be.

So, when I call

var appservicelist = az.AppServices.List();

or

var webapplist = az.WebApps.List();

I get the exception.

Does anyone have any idea what the cause of this is, or what I need to change in Azure in order for this to work?

Thanks.

Answer 1

Please ensure you have subscription in your tenant. If you don't set default subscription, you could set subscription in your code.

IAzure az = Azure.Configure().Authenticate(credentials).WithSubscription("3b4d41fa-****-4bc7-bc11-***");

Note: Replace your subscription id.